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Finding the Fourth Proportional to 520,076.20, 779,595.90 and 239,103.40

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Solution

The fourth proportional to 520,076.20, 779,595.90 and 239,103.40 is: 358,416.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,076.20 : 779,595.90 = 239,103.40 : x
  2. Step 2: Convert to fraction form
    520,076.20/779,595.90 = 239,103.40/x
  3. Step 3: Cross multiply
    520,076.20x = 779,595.90 × 239,103.40
  4. Step 4: Simplify right side
    520,076.20x = 186,404,030,316.06
  5. Step 5: Solve for x
    x = 186,404,030,316.06/520,076.20
  6. Step 6: Final answer
    x = 358,416.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.